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Date:   Wed, 21 Sep 2022 10:14:19 +0530
From:   "Ritesh Harjani (IBM)" <>
To:     hazem ahmed mohamed <>
Cc:     "" <>,
        "" <>,
        "" <>,
        "" <>,
        "" <>,
        "Mohamed Abuelfotoh, Hazem" <>
Subject: Re: Ext4: Buffered random writes performance regression with
 dioread_nolock enabled

On 22/09/19 04:18PM, hazem ahmed mohamed wrote:
> Hey Team,
> I am sending this e-mail to report a performance regression that’s
> caused by commit 244adf6426(ext4: make dioread_nolock the default) , I
> am listing the performance regression symptoms below & our analysis
> for the reported regression.

Although you did mention you already tested on the latest kernel too and there
too you saw a similar performance regression.
But no harm in also double checking if you have this patch [1]. 
This does fixes a similar problem AFAIU.



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